Prefix Meaning(s)
a without
ambi without
an without
ante before
anti against
bi both, two
brady slow
chlor green
circum around
cirrh yellow
con with
contra against
cyan blue
dia across, through
dis apart, separate from
dys difficult, painful
ec away, out
ecto outside
endo within
epi upon
erythr red
eu good, normal
exo outside
hemi half
hyper above, excessive
hypo below, deficient
im not
immun protected, safe
in not
infra below, under
inter between
intra within
iso equal
leuk white
macro large
medi middle
melan black
meso middle
meta after, beyond, changing
micro small
mid middle
mono one
multi many
neo new
pan all
para abnormal, alongside
peri around
polio gray
poly many
post after
pre before
pro before
pseudo false
purpur purple
quadri four
re again, back
retro after
rube red
semi half
sub below, under
super above, excessive
supra above, excessive
sym with
syn with
tachy fast
trans across, through
tri three
ultra beyond, excessive
uni one
xanth yellow
xer dry

List of common medical prefixes and pharmaceutical drug prefixes for PTCB & ExCPT provided by PharmacyTechnicianToday.com for pharmacy technicians and pharmacists.

Related Information: What abbreviations does the Joint Commission instruct not to use? Find out by visiting the JCAHO Joint Commission Official DO NOT USE LIST.

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